Improvement in sewing-machines



JAMES GORDON 8!, WILLIAM E. KINERT'.

Sewing Machines.

Patented April 16, 1872.

gttnwsg UNITED sums PATENT I QFFICE.

, JAMES connon AND WILLIAM E. KINERT, or BLUFFTON, INDIANA.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 125,807, dated April 16, 1872.

Specification describing a new and Improved Sewing-Machine, invented by JAMES GORDON and WILLIAM E. KINERT, of Bluffton, in the county of Wells and State of Indiana.

The nature of our invention consists in the construction and arrangement of a sewingmachine, as will be hereinafter more fully set forth.

Figure l is a side elevation of the improved machine. Fig. 2 is a plan of the bottom. Fig. 3 is a'section on the line as w of Fig. 1. Fig. 4 is a partial elevation of the reverse of Fig. 2 and Fig. 5 is a plan view of part of the plate.

Similar letters of reference indicate corresponding parts.

We pivot the needle-arm A to the fixed support B at its center of gravity to balance it, to run with less noise and jarring than is caused by the needle-arms as commonly arranged, and we work it by wrist-pin O at the end of a pulley-shaft, D, arranged at right angles to the long axis of said shaft, said wristpin working in the irregular slot E at the rear end of the arm, the said slot being so shaped in the part where the wrist-pin works at the time the shuttle is passing through the loop of thread as to allow the needle to rest while the shuttle is passing. With this pulley-shaft D we propose to work the shuttle-carrier and the feed; also through the medium of a rockshaft, F, below the plate of the machine, and

k parallel with shaft D, which said rock-shaft is actuated by a crank, G, and rod H, the latter being connected to the wrist-pin G. The shuttle-carrier I, which is worked by this rockshaft F, arm K, and connecting-rod M, is arranged to work is a course at right angles to that of the feed. The feed-bar L, which is pivoted at N for swinging vertically, has its other end in a slot, 0, of a plate attached to the under side of the shuttle-carrier, by which it is oscillated vertically, the said slot being of the required irregular form to cause the oscillations as the plate moves forward and back. The horizontal forward and back motions of the feed-bar are caused by the sliding bar P, with an inclined groove, Q, in which a pin, R, of said bar works. This bar is'worked by the rock-shaft F, to which it is connected by rod T and slotted plate K, by a wrist-pin, V, in the radial slot W, to be adjusted toward or from the axis of the rock-shaft for varying the feed; and it is so adjusted by the notched finger-rod Q, arranged vertically through the plate of the machine, and having the connect.

ing-rod T connected to its lower-part; also having a spring, R, and a rod, S, applied to it in such manner that its notches will be kept in engagement with the edge of the plate for holding the rod M atany point to which it may be adjusted. Said notched rod is disengaged from the plate bygrasping it andthe spring R between the thumb and forefinger, and pressing them together. The slotted plate K ranges vertically above the rock-shaft F to allow of this adjustment of the'feed by a vertical movement of the said adj usting-rod. This slotted plate is arranged loosely on the rock shaft F, and is caused to vibrate with it by the crank or arm X, keyed fast to the shaft, and having a pin projecting into the curved slot Y in said plate, the object of which is to allow the feed the necessary periods of rest.

The thread take-up wire a is attached to a' slotted plate, I), which is pivoted to the front of the needle-bar support at at e, and is worked by a pin, f, on the needle-bar, projecting into the curved slot 9 of said plate, which is so shaped as to swing the thread-guide h of said take-up at the proper time into the space between the two fixed'thread-guides i on the side of the needle-bar support (Z, and away therefrom for taking up the slack and letting it go again. 1 and m are two thread-tension disks, mounted on the vertical rod 1), and held both in their position, vertically, and against turning, by the bent rod g, which said plates are pressed together by .the spring 1" and nut t, the latter being screwed up and down to vary the tension. The thread passes from the spool on the stand 7', around the rod 12, and thence to the guides 0.

Having thus described our invention, we claim as new, and desire to secure by Letters Patent 1. The arrangement, with the feed-bar L and the rock-shaft F, of the slotted plate P, pin R, rod T, and plate K, notched finger-rod Q, spring R, and rod S, for imparting the hori zontal movements to the said bar and regulating the length of the stitch, substantially as specified,

2. The slotted plate K, arranged loosely on its shaft, when combined with and operated by the crank X keyed to the shaft, and having a wrist-pin that enters the curved slot Y to give the feed-plate the necessary periods of motion and rest, substantially as specified.

3. In combination with the mechanism claimed in the preceding claim for operating the feed-bar L, we claim the mechanism for operating the shuttle-carrier I, when both of said mechanisms are connected with and operated by the same rocking-shaft F, substantially as herein setforth.

JAMES GORDON. WILLIAM E. KINERT.

Witnesses:

JACOB J. Tom), 0. O. 'MITCHELL. 

